This page explains how Debbie Malkin (USATT# 217578)'s rating went from 1018 to 999 at the WCTTA Saturday League event from 9 Nov 2019. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.